WO2019029686A1

WO2019029686A1 - Data transmission method and device, and communication system

Info

Publication number: WO2019029686A1
Application number: PCT/CN2018/099900
Authority: WO
Inventors: 刘星; 黄曲芳
Original assignee: 华为技术有限公司
Priority date: 2017-08-11
Filing date: 2018-08-10
Publication date: 2019-02-14
Also published as: RU2767505C2; RU2020110028A; KR102288180B1; CN110677872B; AU2018315298B2; JP2020530719A; RU2020110028A3; EP3633892B1; CN110677872A; EP3633892A4; US20200120534A1; US10911978B2; KR20200039753A; CN109392009A; BR112020002809A2; AU2018315298A1; PH12020500306A1; EP3633892A1; US20210211922A1; CN111034079A

Abstract

Embodiments of the present application provide a data transmission method and device, and a communication system. The method comprises: a terminal device generates first indication information, the first indication information being used for indicating logical channel groups having to-be-sent data and a data amount of to-be-sent data of part of the logical channel groups having to-be-sent data; and the terminal device sends the first indication information. In the data transmission method and device and the communication system provided in the embodiments of the present application, when the number of idle bits on a MAC PDU is insufficient, the terminal device can notify, by means of the first indication information, the network device of LOGs having to-be-sent data on the terminal device, so that the network device can know the LOGs having to-be-sent data on the terminal device in time and accurately, and the network allocates uplink transmission resources more accurately and properly to the terminal device, thereby improving the efficiency of the uplink resource allocation.

Description

Data transmission method, device and communication system

The present application claims the priority of the Chinese Patent Application, filed on Aug. 11, 2017, the number of which is hereby incorporated by reference. in.

Technical field

The embodiments of the present application relate to communication technologies, and in particular, to a data transmission method, device, and communication system.

Background technique

In the future 5G communication system, the terminal device can report the amount of data to be sent by the terminal device to the network device through a Buffer Status Report (BSR). Therefore, the network device can allocate an uplink transmission resource to the terminal device based on the BSR sent by the terminal device. Because the data of different services is transmitted through different logical channels (LCH). Therefore, in order to avoid excessive signaling overhead of reporting BSR, the future 5G communication system follows the concept of a logical channel group (LCG) in a Long Term Evolution (LTE) communication system. Therefore, the terminal device can report the BSR in units of LCG. In this way, the network device can obtain the amount of data to be sent of the LCGs of all the data to be sent on the terminal device through the BSR sent by the terminal device.

In a future 5G communication system, the terminal device may fill the data to be sent on each LCH into a Media Access Control (MAC) Protocol Data Unit (PDU) and send the data to the network device. When the data to be sent of the current LCH of the terminal device is insufficient to fill the MAC PDU, that is, when there is still a free bit position in the MAC PDU, the terminal device may fill a BSR at the idle bit position of the MAC PDU.

However, when the number of idle bits of the MAC PDU is insufficient to fill the BSR, how the terminal device sends the BSR to the network device at the idle bit position of the MAC PDU is an urgent problem to be solved.

Summary of the invention

The embodiment of the present invention provides a data transmission method, a device, and a communication system, which are used to solve the technical problem of how a terminal device sends a BSR to a network device at a free bit position of a MAC PDU in the prior art.

In a first aspect, an embodiment of the present application provides a data transmission method, where the method includes:

The terminal device generates first indication information, where the first indication information is used to indicate a logical channel group of data to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent;

The terminal device sends the first indication information.

With the data transmission method provided by the first aspect, the terminal device may be insufficient in the number of idle bits of the MAC PDU to fill the BSR capable of indicating all the data to be transmitted, and the BSR of the to-be-sent data amount of the LCG to be transmitted. And generating a first indication information that is shorter than the length of the BSR, to indicate, by using the first indication information, an LCG of the to-be-transmitted data on the terminal device, and an amount of data to be sent of a part of the LCG of the LCG to which the data is to be sent. In this way, when the number of idle bits of the MAC PDU is insufficient, the terminal device can also indicate to the network device, by using the first indication information, which LCGs of the data to be sent on the terminal device, so that the network device can be timely, And accurately knowing which LCGs on the terminal device are to be sent in addition to the LCG indicating the amount of data to be sent, so that the network device allocates uplink transmission resources to the terminal device more accurately and reasonably, and improves allocation of uplink transmission resources. effectiveness.

In a possible implementation manner, each logical channel group in the logical channel group to which data is to be sent corresponds to a priority.

With the data transmission method provided by the possible implementation, when the number of idle bits of the MAC PDU is insufficient, the terminal device may select, according to the priority of each LCG, the first indication information indicating which LCGs of the LCG to be transmitted data are to be sent. The amount of data is such that the network device can know which LCGs are to be sent according to the priority of each LCG, so that the network device allocates the priority for the terminal device more accurately and reasonably. The uplink transmission resource of the higher-order LCG to be transmitted data improves the efficiency of allocating uplink transmission resources.

In a possible implementation manner, each of the logical channel groups has a higher priority than the logical channel group of the data to be sent except the part of the logical channel group. The priority of the logical channel group.

In a possible implementation manner, the at least one first logical channel group exists in the logical channel group that has data to be sent;

When the number of the at least one first logical channel group is smaller than the number of the partial logical channel groups, the part of the logical channel group includes the at least one first logical channel group, and the part of the logical channel group is divided The priority of the other logical channel groups except the at least one first logical channel group is higher than the priority of the logical channel group except the part of the logical channel group in the logical channel group to which data is to be sent;

When the number of the at least one first logical channel group is equal to the number of the partial logical channel groups, the at least one first logical channel group is used as the part of the logical channel group;

When a quantity of the at least one first logical channel group is greater than the number of the partial logical channel groups, a part of the first logical channel group in the at least one first logical channel group is used as the part of the logical channel group, The priority of each of the first logical channel groups in the partial logical channel group is higher than the first logical channel group in the at least one first logical channel group except the part of the first logical channel group priority.

With the data transmission method provided by the possible implementation, when the number of idle bits of the MAC PDU is insufficient, the terminal device may preferentially indicate the first LCG by using the first indication information when there is at least one first LCG in the LCG to be sent data. The amount of data to be sent, so that the network device can preferentially know the amount of data to be sent of the first LCG based on the first indication information, so that the network device allocates the first LCG to be sent to the terminal device more accurately and reasonably. The uplink transmission resource of the data improves the efficiency of allocating uplink transmission resources.

In a possible implementation manner, the air interface format corresponding to the first logical channel group is the same as the air interface format used when the first indication information is sent.

With the data transmission method provided by the possible implementation, when the number of idle bits of the MAC PDU is insufficient, the terminal device may have at least one same format as the air interface used by the terminal device to send the first indication information in the LCG to be sent data. When the first LCG is used, the first indication information is used to preferentially indicate the amount of data to be sent of the first LCG, so that the network device can preferentially obtain the first LCG in the same format as the air interface used to send the first indication information based on the first indication information. The amount of data to be sent is so that the network device allocates the uplink transmission resource corresponding to the air interface format to the terminal device more accurately and reasonably, thereby improving the efficiency of allocating the uplink transmission resource.

In a possible implementation manner, the first indication information is further used to indicate a length of the first indication information.

The data transmission method provided by the possible embodiment, by indicating the length of the first indication information, enables the network device to complete decoding of the first indication information and the like based on the length of the first indication information, ensuring that the network device is first. Indicates the decoding efficiency of the information.

In a possible implementation manner, the method further includes:

The terminal device receives the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.

The data transmission method provided by the possible implementation manner may dynamically indicate the priority of each LCG by using the second indication information, so that each LCG can be different for each LCG in different scenarios or situations. The priority of the data transmission method can be flexibly changed, and the application scenario of the above data transmission method is expanded.

In a second aspect, an embodiment of the present application provides a data transmission method, where the method includes:

The network device receives the first indication information;

The network device determines, according to the first indication information, a logical channel group to which data is to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent.

In a possible implementation manner, the method further includes:

The network device sends the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.

For the beneficial effects of the data transmission method provided by the foregoing second aspect and the possible implementation manners of the second aspect, reference may be made to the beneficial effects brought by the foregoing first aspect and the possible implementation manners of the first aspect, Let me repeat.

In a third aspect, the embodiment of the present application provides a terminal device, including:

a processor, configured to generate first indication information, where the first indication information is used to indicate a logical channel group of data to be sent, and a quantity of data to be sent of a part of the logical channel group of the logical channel group to which data is to be sent;

And a transceiver, configured to send the first indication information.

In a possible implementation, the terminal device further includes:

The transceiver is configured to receive the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.

For the beneficial effects of the terminal device provided by the foregoing third aspect and the possible implementation manners of the third aspect, reference may be made to the beneficial effects brought by the first aspect and the possible implementation manners of the first aspect, and no longer Narration.

In a fourth aspect, the embodiment of the present application provides a network device, including:

a transceiver, configured to receive first indication information;

And a processor, configured to determine, according to the first indication information, a logical channel group of data to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent.

In a possible implementation, the network device further includes:

The transceiver is configured to send the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.

For the beneficial effects of the network device provided by the foregoing fourth aspect and the possible implementation manners of the fourth aspect, reference may be made to the beneficial effects brought by the foregoing second aspect and the possible implementation manners of the second aspect, and no longer Narration.

In a fifth aspect, an embodiment of the present application provides a terminal device, where the terminal device includes: a processor and a memory, and a computer program stored on the memory for execution by the processor,

The processor executes the computer program to implement the data transmission method as provided by the first aspect and the possible embodiments of the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, where the network device includes: a processor and a memory, and a computer program stored on the memory for execution by the processor;

The processor executes the computer program to implement the data transmission method provided by the second aspect and the possible embodiments of the second aspect.

In a seventh aspect, an embodiment of the present application provides a terminal device, including at least one processing element (or chip) for performing the method of the above first aspect.

In an eighth aspect, an embodiment of the present application provides a network device, including at least one processing element (or chip) for performing the method of the above second aspect.

The ninth aspect, the embodiment of the present application provides a data communication system, comprising: the terminal device according to any one of the preceding claims, and the network device according to any one of the preceding clauses.

In a tenth aspect, the embodiment of the present application provides a program, when executed by a processor, for performing the method of the above first aspect.

In an eleventh aspect, an embodiment of the present application provides a program for executing the method of the above second aspect when executed by a processor.

In a twelfth aspect, the embodiment of the present application provides a program product, such as a computer readable storage medium, including the program of the tenth aspect.

In a thirteenth aspect, the embodiment of the present application provides a program product, such as a computer readable storage medium, including the program of the eleventh aspect.

In a fourteenth aspect, the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the method of the first aspect.

In a fifteenth aspect, the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions, and when executed on a computer, causes the computer to execute the method of the second aspect.

The data transmission method, device, and communication system provided by the embodiment of the present application, the terminal device may have insufficient number of idle bits in the MAC PDU to fill the LCG capable of indicating all data to be sent, and the amount of data to be sent of all LCGs to be sent data. The first indication information that is shorter than the length of the BSR may be used to indicate, by using the first indication information, the LCG of the data to be sent on the terminal device, and the to-be-sent data of the LCG of the LCG of the data to be transmitted. the amount. In this way, when the number of idle bits of the MAC PDU is insufficient, the terminal device can also indicate to the network device, by using the first indication information, which LCGs of the data to be sent on the terminal device, so that the network device can be timely, And accurately knowing which LCGs on the terminal device are to be sent in addition to the LCG indicating the amount of data to be sent, so that the network device allocates uplink transmission resources to the terminal device more accurately and reasonably, and improves allocation of uplink transmission resources. effectiveness.

DRAWINGS

1 is a frame diagram of a communication system according to an embodiment of the present application;

2 is a schematic diagram of a conventional BSR;

3 is a schematic diagram of another existing BSR;

4 is a schematic diagram of a BSR according to an embodiment of the present application;

FIG. 5 is a signaling flowchart of a data transmission method according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another BSR according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of still another BSR according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of another terminal device according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another network device according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a data communication system according to an embodiment of the present application.

Detailed ways

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application. As shown in FIG. 1, the communication system includes: a network device 01 and a terminal device 02. Network device 01 and terminal device 02 can communicate using at least one air interface format. among them,

The network device: may be the foregoing base station, or various wireless access points, or may refer to a device in the access network that communicates with the terminal device through one or more sectors on the air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a Global System of Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA), or may be a wideband code division multiple access ( The base station (NodeB, NB) in the Wideband Code Division Multiple Access (WCDMA) may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in Long Term Evolution (LTE), or a relay station or an access point. , or the base station gNB in the future 5G network, etc., is not limited herein.

Terminal device: may be a wireless terminal or a wired terminal, the wireless terminal may be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem. . The wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal. For example, it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (Personal Digital Assistant, PDA) and other equipment. The wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, and a remote terminal. The access terminal, the user terminal (User Terminal), the user agent (User Agent), and the user device (User Device or User Equipment), and the sensor having the network access function are not limited herein.

The above-mentioned air interface format may refer to an air interface having at least one of the following parameters or information (that is, an example of configuration information), specifically:

Waveform parameters: or waveform parameters, are parameters that can indicate or determine a waveform. As an example and not limitation, in the embodiment of the present application, the waveform parameter may include at least one of the following parameters: a waveform parameter used in an Orthogonal Frequency Division Multiplexing (OFDM) technology, and a single carrier frequency division. Waveform parameters used in Single-carrier Frequency-Division Multiple Access (SC-OFDM), waveform parameters used in filter Orthogonal Frequency Division Multiplexing (filter OFDM) technology, and general-purpose filters Waveform parameters used in the carrier (Universal Filtered Multi-Carrier, UFMC) technology, waveform parameters used in Filter Bank Multicarrier (FBMC) technology, and Generalized Frequency Division Multiplexing (GFDM) technology Waveform parameters used in etc.

Modulation method: In the communication technology, in order to ensure the communication effect and overcome the problem in the long-distance signal transmission, the signal spectrum can be moved to the high-frequency channel for transmission by modulation. The process of loading a signal to be transmitted to a high frequency signal is called modulation. As an example and not limitation, in the embodiment of the present application, the modulation mode may include at least one of the following: Amplitude Shift Keying (ASK) modulation, Phase Shift Keying (PSK) modulation, and frequency. Frequency Shift Keying (FSK) modulation, Quadrature Amplitude Modulation (QAM) modulation, Minimum Shift Keying (MSK) modulation, Gaussian Filtered Minimum Shift (Gaussian Filtered Minimum Shift) Keying, GMSK) modulation, OFDM modulation.

Bandwidth Configuration: In the embodiment of the present application, the bandwidth configuration may refer to the usage width on the frequency domain resource required by the air interface. As an example and not by way of limitation, the bandwidth configuration corresponding to the broadband transmission service may refer to the minimum frequency domain resource width required by the air interface, or the number of subcarriers. The bandwidth configuration corresponding to the narrowband transmission service may refer to the maximum frequency domain resource width required by the air interface, or the number of subcarriers.

Radio frame configuration mode: Subcarrier Spacing (SCS), symbol length, Cyclic Prefix (CP), Timing (such as the length of time between uplink grant and uplink data transmission), duplex mode, transmission Transmission Time Interval (TTI) length, length of radio frame and radio subframe. The duplex mode can be divided into full-duplex, half-duplex (including half-duplex up-down ratio), or flexible duplex. It should be noted that, in some air interfaces, the duplex mode may be fixed or flexible, and the transmission time interval may be a fixed value or a flexible change, which is not specifically limited in this embodiment of the present application.

Resource multiplexing mode: As an example and not limitation, in the embodiment of the present application, the resource multiplexing mode may include at least one of the following methods:

Frequency Division Multiplexing (FDM). That is, the total bandwidth for the transmission channel is divided into a number of sub-bands (or sub-channels), and each sub-channel transmits one signal. Frequency division multiplexing requires that the total frequency width is greater than the sum of the frequency of each subchannel, and in order to ensure that the signals transmitted in each subchannel do not interfere with each other, an isolation band should be established between each subchannel, thus ensuring mutual signal mutual Do not interfere (one of the conditions).

Time Division Multiplexing (TDM). That is, the use of different time periods of the same physical connection to transmit different signals can also achieve the purpose of multiplexing. Time division multiplexing uses time as a parameter for signal division, so it is necessary to make the respective signals do not overlap each other on the time axis. Time division multiplexing divides the time for transmitting information to the entire channel into a number of time slices (referred to as time slots), and allocates these time slots to each signal source for use.

Space Division Multiplexing (SDM). That is, the same frequency band is reused in different spaces. In mobile communication, the basic technique for realizing spatial segmentation is to use adaptive array antennas to form different beams in different user directions. Moreover, the space segmentation can be used to distinguish different users, or each beam can provide a unique channel without other user interference, or can divide the space to distinguish different data of the same user, and can also divide the space. To distinguish the same data of the same user for higher gain.

Code Division Multiplexing (CDM). That is, a multiplexing method that distinguishes the original signals of the respective channels by different codes. As an example and not by way of limitation, at least one of the following may be included: Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA) And Synchronous Code Division Multiple Access (SCDMA).

Channel configuration mode: In the embodiment of the present application, different types of data or signals may be transmitted by using different channels. Therefore, the channel configuration mode may refer to a time-frequency resource, a code domain resource, and an air domain resource (for example, a designated beam) corresponding to one channel. As an example and not by way of limitation, in the embodiments of the present application, the channel used by the wireless communication may include at least one channel or a combination of multiple channels: a control channel for transmitting control information (eg, may include an uplink control channel and a downlink) A control channel), a data channel for transmitting data (for example, may include an uplink data channel and a downlink data channel), a reference channel for transmitting a reference signal, and an access channel for transmitting access information.

Coding mode: Coding is a transformation of a source symbol for the purpose of improving the validity of communication, or a source symbol conversion for reducing or eliminating the source margin. For example, to find a method for the statistical characteristics of the source output symbol sequence, the source output symbol sequence is transformed into the shortest codeword sequence, so that the average information amount of each symbol of the latter is maximized, and at the same time, it can be guaranteed. Restore the original symbol sequence without distortion. By way of example and not limitation, in the embodiment of the present application, the coding mode may include at least one of the following: a Polar Code, a Turbo Code, and a Convolution Code.

Protocol stack configuration: Protocol stack refers to the sum of all layers of protocols in the network, and its image reflects the process of file transfer in a network. That is, from the upper layer protocol to the underlying protocol, and then from the underlying protocol to the upper layer protocol. By way of example and not limitation, in the embodiment of the present application, the protocol stack used by the wireless communication may include at least one protocol layer or a combination of multiple protocol layers: Packet Data Convergence Protocol (PDCP) layer, wireless A Link Control (RLC) layer, a Media Access Control (MAC) layer, a Physical layer, and a Radio Resource Control (RRC) layer. Among them, each layer protocol can exist multiple protocol entities.

Multiple Access Mode: Unlike multiplexing, multiple access technology does not require that the various information be grouped together, but each is modulated and sent to the channel, and each is modulated from the channel. For information, as an example and not limitation, in the embodiment of the present application, the multiple access method used by the wireless communication may include at least one of the following: FDMA, TDMA, CDMA, SCMA, non-orthogonal multiple access (Non Orthogonal Multiple Access (NOMA), Multi-User Shared Access (MUSA).

It should be noted that the foregoing communication system may be an LTE communication system, or may be other communication systems in the future, such as a 5G communication system, and the like, which is not limited herein.

In an LTE communication system, data of different services is transmitted through different LCHs. Therefore, the LTE communication system introduces the concept of LCG, and one LCG can include at least one LCH. Currently, there are four LCGs in the LTE system. In the prior art, the terminal device may send the BSR to the network device in units of LCG. In this way, the network device can know which LCG of the terminal device has data to be sent through the BSR sent by the terminal device, and the amount of data to be sent by the LCG, which is beneficial for the network device to allocate uplink transmission resources for the terminal device.

2 is a schematic diagram of a conventional BSR. In the LTE communication system, when the terminal device has only one LCG to send data, the terminal device may send the short BSR as shown in FIG. 2 to the network device. As shown in FIG. 2, the short BSR is composed of one byte (Oct1), and includes an identifier (ID) of an LCG to which data is to be transmitted, and an amount of data to be transmitted of the LCG. The amount of data to be sent of the LCG may be specifically indicated by the Buffer Size (BS) information shown in FIG. 2 . In the subsequent illustrations, the BS information is used to indicate the amount of data to be transmitted of one LCG. FIG. 3 is a schematic diagram of another conventional BSR. In the LTE communication system, when the terminal device has at least two LCGs to be sent data, the terminal device may send the long BSR as shown in FIG. 3 to the network device. As shown in FIG. 3, the long BSR is composed of 3 bytes (ie, Oct1, Oct2, and Oct3). In the long BSR, the field for transmitting the amount of data to be transmitted for each LCG is fixed. Therefore, after receiving the long BSR, the network device can learn the amount of data to be sent of each LCG of the terminal device by using the value on the field corresponding to each LCG. For example, BS information #0 is the amount of data to be transmitted of LCG #0, BS information #1 is the amount of data to be transmitted of LCG #1, BS information #2 is the amount of data to be transmitted of LCG #2, and BS information #3 is LCG. #3 The amount of data to be transmitted.

In an LTE communication system, a terminal device can transmit data to a network device through a MAC PDU. The MAC PDU includes a MAC Service Data Unit (SDU), a sub-head corresponding to the MAC SDU, a MAC Control Control Element (CE), and a sub-head corresponding to the MAC CE. The MAC SDU is used to transmit data to be transmitted of different LCHs, and the MAC CE is used to transmit some control information. Therefore, after receiving the uplink scheduling grant sent by the network device, the terminal device may perform a logical channel priority on the to-be-sent data of the current LCH of the terminal device according to the uplink transmission resource used for sending the MAC PDU indicated by the uplink scheduling grant ( Logical Channel Prioritization (LCP) processes to generate MAC PDUs. Then, the terminal device may send the MAC PDU to the network device by using the uplink transmission resource indicated by the uplink scheduling authorization, and implement transmission of each service data.

When the data to be sent of the current LCH of the terminal device is insufficient to fill the MAC PDU, that is, when there is an idle bit position in the MAC PDU, if the number of free bits of the MAC PDU can fill a BSR, the terminal device may be in the The free bit position of the MAC PDU is filled with a Padding BSR. In the MAC PDU, the BSR can be regarded as a MAC CE. Therefore, in the embodiment of the present application, the BSR is also referred to as a BSR MAC CE.

In the prior art, when the number of idle bits of the MAC PDU is greater than or equal to the number of bits corresponding to the short BSR+ subheader and less than the number of bits corresponding to the long BSR+ subheader, if only one LCG needs to transmit data on the terminal device, the foregoing The terminal device can fill a short BSR in the MAC PDU. If there are multiple LCGs on the terminal device to send data, the terminal device may fill a MAC PDU with a truncated BSR. Among them, the truncated BSR is the same as the short BSR format shown in FIG. 1. That is, the truncated BSR can only be used to indicate the identity of an LCG that has data to be transmitted, and the amount of data to be sent of the LCG. The difference between a truncated BSR and a short BSR is that the subheader of the truncated BSR is different from the subhead of the short BSR. Therefore, the network device can know whether the terminal device has only one LCG to send data through the sub-header of the truncated BSR.

FIG. 4 is a schematic diagram of a BSR according to an embodiment of the present application. As shown in Figure 4, in the future 5G communication system, the LCH may be divided into 8 LCGs. At present, the format of the BSR in the 5G communication system is still discussed, and one of the formats of the BSR that may be selected may be as shown in FIG.

Taking the BSR shown in FIG. 4 as an example, the first byte (Oct1) of the BSR indicates the LCG of all the data to be transmitted on the terminal device through a bitmap. Wherein one bit in the bitmap corresponds to one LCG. In the bitmap, each bit can be sequentially associated with one LCG in the order of the LCG number from small to large. Shown in FIG. 4 is a schematic diagram of a BSR corresponding to each LCG in an order from small to large in accordance with the LCG number. When the bit is the first value, the LCG corresponding to the bit is the LCG of the data to be transmitted, and when the bit is the second value, the LCG corresponding to the bit is indicated as the LCG with no data to be transmitted. Exemplarily, when the first value is 1, the second value may be 0, or when the first value is 0, the second value may be 1.

The subsequent byte after the first byte (Oct1) of the BSR is used to indicate the amount of data to be transmitted of the LCG of the data to be transmitted indicated by the first byte. One byte is used to indicate the amount of data to be transmitted (ie, BS information) of the LCG to which data is to be transmitted. The amount of data to be transmitted of each LCG to be transmitted may be sequentially arranged according to the order of the respective LCGs in the bitmap. Exemplarily, taking the first value and the second value as 0 as an example, if each of the eight LCGs shown in FIG. 4 has data to be transmitted, Oct1 may be 11111111. Oct2 is the amount of data to be transmitted of LCG 0, Oct3 is the amount of data to be transmitted of LCG 1, Oct4 is the amount of data to be transmitted by LCG2, and so on. In this scenario, the BSR has a total of 9 bytes. Assuming that two of the eight LCGs shown in FIG. 4 have data to be transmitted, which are LCG2 and LCG7, respectively, Oct1 can be 00100001. Oct2 is the amount of data to be transmitted of LCG2, and Oct3 is the amount of data to be transmitted of LCG7. In this scenario, the BSR has a total of 3 bytes. That is to say, in the future 5G communication system, the length of the BSR can be changed according to the number of LCGs to which data is to be transmitted.

In future 5G communication systems, the terminal device may still send data to the network device through the MAC PDU. Therefore, there may be a case where the data to be transmitted of the current LCH of the terminal device is insufficient to fill the MAC PDU, and the number of idle bits of the MAC PDU is insufficient to fill the BSR shown in FIG. 4 above. That is, the number of idle bits of the MAC PDU is not enough to fill the BSR carrying the amount of data to be transmitted of the LCG with all data to be transmitted. In this case, if the terminal device uses the truncated BSR, the network device only knows that there is still an LCG to be sent on the terminal device after receiving the truncated BSR, but the network device cannot know the end. Which LCGs are not conducive to network devices to allocate uplink transmission resources for terminal devices.

Therefore, in consideration of the above problem, the embodiment of the present application provides a data transmission method. The technical solutions of the embodiments of the present application are described in detail by using some embodiments in the following, with reference to the future 5G communication system and the BSR shown in FIG. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

FIG. 5 is a signaling flowchart of a data transmission method according to an embodiment of the present application. In this embodiment, when the number of idle bits of the MAC PDU is insufficient to fill the BSR shown in FIG. 4, the terminal device sends a logical channel group for indicating data to be sent and a logical channel to be sent data to the network device. The specific process of the first indication information of the amount of data to be transmitted of a part of the logical channel group of the group. As shown in FIG. 5, the method may include:

S101. The terminal device generates first indication information.

The first indication information is used to indicate the LCG of the data to be sent, and the amount of data to be sent of a part of the LCG of the LCG to which the data is to be sent.

S102. The terminal device sends the first indication information to the network device.

S103. The network device receives the first indication information.

S104. The network device determines, according to the first indication information, an LCG that has data to be sent, and an amount of data to be sent of a part of the LCG of the LCG to which the data is to be sent.

In this embodiment, the terminal device may be insufficient to fill the LCG capable of indicating all the data to be sent by the terminal device and all the data to be sent when the number of idle bits of the MAC PDU is insufficient to fill the BSR shown in FIG. 4 . When the BSR of the data volume of the LCG is to be sent, the terminal device may generate a first indication information that is shorter than the length of the BSR, to indicate, by using the first indication information, the LCG of the data to be sent on the terminal device, and to be sent. The amount of data to be sent by the LCG of a portion of the LCG of the data. In this way, the terminal device can indicate to the network device that the LCG of the data to be sent on the terminal device is still indicated by the first indication information when the number of idle bits of the MAC PDU is insufficient. In this way, after receiving the first indication information, the network device can know, in addition to the LCG indicating the amount of data to be sent, which LCGs are to be sent on the terminal device, so that the network device is more accurate. And rational allocation of uplink transmission resources for terminal devices improves the efficiency of allocating uplink transmission resources.

In this embodiment, the first indication information may follow the BSR format shown in FIG. 4 above. That is, the first byte of the first indication information is used to indicate the LCG of the data to be transmitted, and the subsequent byte is used to indicate the amount of data to be transmitted of a part of the LCG of the LCG to which the data is to be transmitted. One byte is used to indicate the amount of data to be sent by one LCG. The first indication information is different from the BSR shown in FIG. 4 in that the first indication information indicates that the amount of data to be transmitted of the LCG of a part of the data to be transmitted is less than the BSR shown in FIG. 4 . Therefore, the above first indication information may also be referred to as a truncated BSR in a 5G communication system. It can be understood by those skilled in the art that the above first indication information may still use the term of Truncated BSR or BSR in the 5G mobile communication system, and other terms may be used. Therefore, the naming of the first indication information in each communication system is not limited in the embodiment of the present application.

The following describes, for the first indication information, which LCGs of data to be transmitted, and which LCGs of the LCGs of the LCG to which data to be transmitted are introduced and illustrated.

The LCG of the data to be sent indicated by the foregoing first indication information may be an LCG of all the data to be sent on the terminal device, or may be an LCG of a part of the LCGs of the terminal device to be sent data.

For example, the future 5G communication system introduces the various air interface formats listed above. Each LCH can be mapped to at least one air interface format. That is, the data to be transmitted on the LCH can be mapped to the time-frequency resource corresponding to the LCH for transmission. Exemplarily, it is assumed that the network device is configured with two air interface formats, namely, an air interface format 1 and an air interface format 2. The LCH1 of the terminal device can be mapped to the air interface format 1 and the LCH2 of the terminal device can be mapped to the air interface format 1 and the air interface format 2. That is, the data to be transmitted of the LCH1 can be transmitted by using the time-frequency resource corresponding to the air interface format 1, and the LCH2 can be transmitted by using the time-frequency resource corresponding to the air interface format 1 and the time-frequency resource corresponding to the air interface format 2. Alternatively, the data to be transmitted of the LCH1 may be transmitted preferentially or only by using the time-frequency resource corresponding to the air interface format 1. The LCH2 may transmit the time-frequency resource corresponding to the air interface format 1 and the time-frequency resource corresponding to the air interface format 2. Wait.

Therefore, the LCG of the part of the LCG that has data to be transmitted on the terminal device has an LCG to be sent, and may be one of the corresponding air interface formats of the LCG to be sent on the terminal device, and is currently sent by the terminal device. The LCG with the same air interface format used by the first indication information may also be an LCG in which all data to be sent in the LCG of the terminal device is larger than a preset threshold, and may also be all data to be sent on the terminal device. In the LCG, the corresponding one of the air interface formats, the same as the air interface format used by the terminal device to send the first indication information, and the LCG to be sent is greater than the preset threshold, and may be determined according to the configuration of the communication system. . The air interface format corresponding to the LCG may be preset, and may be an air interface format that is allowed to be mapped by all the LCHs in the LCG, and may also be an air interface format that is allowed to be mapped by any LCH in the LCG, and may also be used in the LCG. An air interface format or the like in which the LCH currently having data to be transmitted is allowed to be mapped.

For example, assume that the LCGs of the above-mentioned terminal devices to which data is currently to be transmitted are LCG1, LCG2, LCG4, and LCG7. The air interface format corresponding to the LCG1 and the air interface format of the LCG4 are the same as the air interface format used by the terminal device to send the first indication information, and the terminal device may generate the LCG1 and the LCG4. And, the first indication information of the amount of data to be sent of a part of the LCGs in the LCG1 and the LCG4.

It should be noted that, in an implementation manner, when the terminal device performs the LCP according to the mapping relationship between the LCH and the air interface format, the uplink resources can be used only when the LCHs of the air interface format mapping of the uplink resources are completely the same. Do joint processing. For example, when LCH0, LCH1, and LCH2 are mapped to the first air interface format, but only LCH0 and LCH1 are mapped to the second air interface format, the uplink resource in the first air interface format and the uplink resource in the second air interface format cannot be used. Joint processing. For example, when LCH0, LCH1, and LCH2 are both mapped to the first air interface format, and LCH0, LCH1, and LCH2 are also mapped to the second air interface format, the uplink resource in the first air interface format and the uplink resource in the second air interface format are used. You can do joint processing. The joint processing of the foregoing multiple uplink resources refers to that the terminal device can add these uplink resources together and perform LCP on the total number. For example, when the first uplink resource has 100 bits and the second uplink resource has 300 bits, and the first uplink resource and the second uplink resource can be jointly processed, the terminal device adds up two uplink resources, and has a total of 400 bits. The resources then do LCP on this 400 bit.

As described in the foregoing description, the foregoing first indication information is used to indicate the amount of data to be sent of a part of the LCG of the LCG to which the data is to be sent. The number of the part of the LCG may be determined according to the system configuration, and may also be sent according to the terminal device. The length of the first indication information is determined and the like. For example, assuming that the length of the first indication information is 3 bytes, since the first byte (Oct1) of the first indication information is used to indicate the LCG of the data to be transmitted, each byte in the subsequent byte may be The amount of data to be sent used to indicate the LCG of a data to be transmitted. Therefore, it can be determined that the first indication information can indicate the amount of data to be transmitted of the two LCGs in the LCG of the data to be transmitted. It should be noted that the length of the first indication information may be determined by the base station by using the indication information to the terminal device, or may be determined by the terminal device according to the number of bits used by the MAC PDU to send the first indication information. For example, when the foregoing terminal device sends the first indication information by using the idle bit position of the MAC PDU, the terminal device may determine the size of the first indication information according to the number of idle bits of the MAC PDU.

As described in the foregoing description, the foregoing first indication information is used to indicate the amount of data to be sent of a part of the LCGs of the LCG to which data to be transmitted, where a part of the LCGs may be specifically from the LCG of the data to be transmitted according to the number of the part of the LCGs. Determined, the specific can be divided into the following situations:

The first case: when each LCG on the terminal device corresponds to a priority, the priority of each LCG in a part of the LCGs here is higher than the LCG of the data to be transmitted except the part of the LCG. The priority of the LCG. In this way, after receiving the first indication information, the network device can learn, according to the LCG of the data to be sent indicated by the first indication information, and the priorities of the LCGs, which LCGs are to be sent in the first indication information. The amount of data.

The priority of the foregoing LCG may be preset, and may also be dynamically indicated by the network device. Therefore, in some embodiments, the network device may further send the second indication information to the terminal device to indicate, by using the second indication information, a priority corresponding to the at least one LCG on the terminal device. For example, the priority of the LCG whose priority has changed is indicated by the second indication information, or the priority of all the LCGs and the like are indicated by the second indication information. In this way, after receiving the second indication information, the terminal device can learn the priority of each LCG according to the second indication information. In a specific implementation, the foregoing second indication information may be carried in physical layer signaling, system information block (SIB) signaling, resource control (Radio Resource Control, RRC) signaling, downlink control signaling, and the like. To the terminal device.

Optionally, before the foregoing network device sends the second indication information to the terminal device, the network device may further determine a priority corresponding to each LCG on the terminal device. In a specific implementation, the foregoing network device may determine a priority of each LCG according to a priority of an LCH included in each LCG. For example, the network device may use the priority of the LCH with the lowest priority in the LCG as the priority of the LCG, or the priority of the LCH with the highest priority among the LCGs as the priority of the LCG. In some embodiments, when the network device side is pre-configured with a plurality of priority tables, each of the priority tables characterizing a mapping relationship between the LCG and the priorities, the network device may determine the currently used priority table. Then, the priority corresponding to the LCG restricted in the priority table is indicated by the second indication information.

In some embodiments, the priority of the above LCG may correspond to the priority of the LCH included in the LCG. For example, the priority of each LCH included in the high priority LCG is higher than the priority of each LCH included in the lower priority LCG. That is, the LCH with a higher priority is assigned to one LCG. In this way, when the number of idle bits of the MAC PDU is insufficient to fill the BSR shown in FIG. 4, the priority of each LCG can be obtained according to the priority of the LCH of each LCG on the terminal device, so that the terminal device can A part of the LCG is determined from the LCG of the data to be transmitted according to the priority of each LCG, the LCG to be transmitted data, and the number of LCGs, and the amount of data to be sent of the part of the LCG is indicated by the first indication information. Correspondingly, after receiving the first indication information sent by the terminal device, the network device may determine, in the same manner as the terminal device side, whether the first indication information indicates which LCGs in the LCG to be sent data are to be sent. The amount of data will not be described in detail.

For example, the LCH with the highest priority among the LCHs included in the high-priority LCG has a higher priority than the LCH with the highest priority among the LCHs included in the LCG with a lower priority, or the LCG with the higher priority is included. The LCH with the lowest priority among the LCHs has a higher priority than the LCH with the lowest priority among the LCHs included in the LCG with a lower priority. That is to say, the priority of the LCG is determined by the LCH with the highest priority or the LCH with the lowest priority among the LCGs. The terminal device can learn the priority of each LCG according to the priority of the LCH with the highest priority among the LCGs or the priority of the LCH with the lowest priority. It can be understood that the manner of determining the priority of the foregoing LCG is only an example of the embodiment of the present application, and the manner for determining the priority of the LCG is not limited in the embodiment of the present application.

In some embodiments, the network device may further send third indication information to the terminal device to instruct the terminal device to send the first indication information. In this way, after receiving the third indication information, the terminal device may send the first indication information to the network device when the number of idle bits of the MAC PDU is insufficient to fill the BSR shown in FIG. 4 . In a specific implementation, the foregoing third indication information may be carried in physical layer signaling, system information block (SIB) signaling, resource control (Radio Resource Control, RRC) signaling, downlink control signaling, and the like. To the terminal device.

FIG. 6 is a schematic diagram of another BSR according to an embodiment of the present application. For example, the LCG of the data to be transmitted is LCG0, LCG1, and LCG2, wherein the priority of LCG2 is higher than that of LCG0, and the priority of LCG0 is higher than that of LCG1. It is assumed that the first indication information can be used to indicate the amount of data to be transmitted of the two LCGs. Then, the foregoing terminal device may generate first indication information for indicating the amount of data to be transmitted of the LCG0, the LCG1, the LCG2, and the LCG0, and the amount of data to be transmitted of the LCG2. As shown in FIG. 6, the first byte Oct1 of the first indication information may be 11100000, the second byte Oct2 is used to indicate the amount of data to be sent of the LCG0, and the third byte Oct3 is used to indicate the amount of data to be sent of the LCG2. .

It should be noted that, in the first indication information, the amount of data to be sent of a part of the LCG selected from the LCG of the data to be transmitted is still in the first indication information according to the bit position corresponding to each LCG on the first byte. Arrange.

In the second case, each LCG on the terminal device corresponds to one priority, and at least one first LCG exists in the LCG with the data to be sent.

In this scenario, if the number of the at least one first LCG is less than the number of the LCGs, the priority of the LCG includes at least one first LCG, and the priorities of the LCGs other than the at least one first LCG in the part of the LCG are high. The priority of other LCGs except a part of the LCG in the LCG to which data is to be transmitted. That is to say, among the LCGs other than the first LCG, the other LCGs are LCGs with higher priority among the LCGs to which data is to be transmitted.

When the number of at least one first LCG is equal to the number of a part of the LCGs, at least one LCG may be directly used as the above-mentioned part of the LCG. That is to say, only a first LCG is included in a part of the LCG.

When a quantity of the at least one first LCG is greater than a quantity of the part of the LCG, a part of the first LCG of the at least one first LCG is taken as the part of the LCG. The priority of each first LCG in the foregoing part of the LCG is higher than the priority of the first LCG in the first LCG except the first LCG in the foregoing part of the LCG. That is to say, only a part of the LCG includes the first LCG with higher priority.

Optionally, the foregoing first LCG may be: an LCG in the same format as the air interface used in sending the first indication information in the LCG to be sent data.

In a specific implementation, the terminal device may determine whether the first LCG exists in the LCG of the data to be sent according to the air interface format corresponding to the LCG of the data to be sent and the air interface format used when the first indication information is sent. If the first LCG in the LCG of the data to be transmitted is smaller than the number of LCGs to be sent by the first indication information, the terminal device may further follow the LCG according to the manner shown in the first case. Priority, and then selecting some LCGs from the remaining LCGs to be sent data, so that the first LCG and the total number of LCGs from the remaining LCGs to be sent data are the amount of data to be sent that the first indication information can indicate. The number of LCGs. If the number of the first LCGs of the LCGs to be transmitted is equal to the number of LCGs of the to-be-sent data amount that the first indication information can indicate, the terminal device can indicate that the first LCGs are to be sent by using the first indication information. The amount of data for the LCG. If the number of the first LCGs of the LCGs to be transmitted is greater than the number of LCGs of the to-be-sent data amount that can be indicated by the first indication information, the terminal device may select the multiple first LCGs according to the priorities of the first LCGs. The first LCG that can indicate the amount of data to be transmitted can be selected using the first indication information.

Correspondingly, after receiving the first indication information sent by the terminal device, the network device may determine, in the same manner as the terminal device side, whether the first indication information indicates which LCGs in the LCG to be sent data are to be sent. The amount of data will not be described in detail.

Optionally, the first LCG may be an LCG that is selected from the LCG to be sent according to other preset conditions, for example, the first LCG is an LCG whose delay is less than or equal to a preset delay threshold. The delay may be, for example, the delay of the LCH in which the delay of the transmitted service is the highest in the LCG, etc., and will not be further described herein.

The third case: the above part of the LCG may also be in the order of the LCG number from small to large, and the determined number of the part of the LCG is selected from the LCG to be transmitted data.

Illustratively, it is assumed that the LCGs of the data to be transmitted are LCG0, LCG1, LCG4, and LCG5, wherein the number of LCGs of the LCGs of the data to be transmitted is 3. For example, a part of the LCGs may be selected from the LCGs to be transmitted in the order that the LCG numbers are small to large, and the partial LCGs may be, for example, LCG0, LCG1, and LCG4. That is, the first indication information is used to indicate LCG0, LCG1, LCG4, and LCG5, and the amount of data to be transmitted of LCG0, the amount of data to be transmitted of LCG1, and the amount of data to be transmitted of LCG4.

As described in the foregoing embodiment, the first indication information is that the terminal device sends the MAC PDU to the network device when the number of idle bits of the MAC PDU is insufficient to fill the BSR shown in FIG. 4 . Therefore, the above first indication information is usually located at the end of the MAC PDU. In this scenario, after receiving the MAC PDU, the network device can automatically determine the number of bits remaining in the MAC PDU after completing the decoding of the MAC CE or the MAC SDU in the MAC PDU before the first indication information. An indication of the length of the message. In this way, the network device can complete decoding of the first indication information based on the length of the first indication information.

Optionally, in some embodiments, the first indication information is not located at the end of the MAC PDU. That is, in the MAC PDU, there is also a MAC SDU or MAC CE after the bit position where the first indication information is located. In the scenario, the first indication information may be used to indicate the length of the first indication information. Therefore, the network device can complete decoding of the first indication information and the like based on the length of the first indication information, and ensure the decoding efficiency of the first indication information by the network device.

It should be noted that, in the foregoing embodiment, the first indication information is described and introduced in the scenario that the number of idle bits of the MAC PDU is insufficient for the terminal device to fill the BSR shown in FIG. 4 . However, those skilled in the art can understand that the foregoing first indication information includes, but is not limited to, the foregoing application scenario. The data transmission method provided by the embodiment of the present application may be used in any scenario in which the terminal device needs to send the indication information indicating the amount of data to be sent on the LCG to the network device, and details are not described herein. In the meantime, although the embodiment of the present application uses the BCH format in which the LCH is divided into eight LCGs, the first indication information is described and illustrated. However, it can be understood by those skilled in the art that the format of the foregoing first indication information is not limited thereto, and the number of bits used to indicate the amount of data to be sent changes when the LCH is divided into other numbers of LCGs. The format of the first indication information may also be adaptively adjusted or deformed (for example, 5 bits), and details are not described herein again.

In addition, in some extreme cases, for example, when the number of idle bits of the MAC PDU can only fill the first indication information of one byte, the foregoing first indication information may also be used only for indicating the LCG of the data to be sent, without indicating The amount of data to be sent of the LCG of any data to be transmitted is similar to the above, and will not be described again.

In the data transmission method provided by the embodiment of the present application, the terminal device may be configured to: when the number of idle bits of the MAC PDU is insufficient to fill the BSR capable of indicating all the data to be transmitted, and the BSR of the to-be-sent data amount of the LCG to be transmitted. The first indication information that is shorter than the length of the BSR may be generated to indicate, by using the first indication information, an LCG of the data to be sent on the terminal device, and an amount of data to be sent of a part of the LCG of the LCG to which the data is to be sent. In this way, when the number of idle bits of the MAC PDU is insufficient, the terminal device can also indicate to the network device, by using the first indication information, which LCGs of the data to be sent on the terminal device, so that the network device can be timely, And accurately knowing which LCGs on the terminal device are to be sent in addition to the LCG indicating the amount of data to be sent, so that the network device allocates uplink transmission resources to the terminal device more accurately and reasonably, and improves allocation of uplink transmission resources. effectiveness.

In the above embodiment, when the number of idle bits of the MAC PDU is insufficient for the terminal device to fill the BSR shown in FIG. 4, the terminal device may generate a first indication information that is shorter than the length of the BSR. The data transmission methods provided are described and described. However, when the number of idle bits of the MAC PDU is insufficient to fill the BSR shown in FIG. 4, the future 5G communication system may allow the terminal device to fill a MAC PDU with a truncated BSR, and the truncated BSR may be used to indicate that part of the BSR is to be used. The LCG that sends the data, and the amount of data to be sent by these LCGs. That is, when the idle bit of the MAC PDU is insufficient to drop the LCG capable of indicating all the data to be transmitted of the terminal device, and the BSR of the amount of data to be transmitted of the LCG of the data to be transmitted, the terminal device may fill the MAC PDU. An LCG indicating a portion of data to be transmitted, and a truncated BSR of the amount of data to be transmitted of these LCGs.

Optionally, the truncated BSR may use the BSR format shown in FIG. 2 or FIG. 4 above. Taking the BSR format shown in FIG. 4 as an example, the first byte of the truncated BSR is used to indicate the LCG indicating the amount of data to be transmitted, and the subsequent bytes are used to indicate the amount of data to be transmitted of these LCGs. One byte is used to indicate the amount of data to be sent by one LCG. The above-described truncated BSR differs from the BSR shown in FIG. 4 in that the truncated BSR indicates a small number of LCGs to be transmitted data, and the amount of data to be transmitted of these LCGs. It should be noted that the BSR shown in FIG. 2 or FIG. 4 is only an example. The truncated BSR may adopt a BSR structure as shown in FIG. 2 or FIG. 4, but is used to indicate the amount of data to be sent. The number can be adaptively deformed, for example, it can be 5 bits, 9 bits, and the like.

FIG. 7 is a schematic diagram of still another BSR according to an embodiment of the present application. As shown in FIG. 7, it is assumed that each of the eight LCGs shown in FIG. 7 has data to be transmitted, but the number of free bits of the current MAC PDU can only be filled with a truncated BSR having 3 bytes. The amount of data to be transmitted in LCG2 and LCG4 can be indicated by the truncated BSR, and the Oct1 of the truncated BSR can be 00101000. Oct2 is the amount of data to be transmitted of LCG 2, and Oct3 is the amount of data to be transmitted of LCG 4.

In this way, the network device can learn, by using the first byte of the truncated BSR, which LCGs are indicated by the truncated BSR, and the subsequent bytes can be used to know the amount of data to be sent of the indicated LCGs. The sub-header of the truncated BSR knows that there is still an LCG on the terminal device to which data is to be transmitted.

It will be understood by those skilled in the art that the above-described truncated BSR may still use the term of Truncated BSR or BSR in the 5G mobile communication system, and other terms may be used. Therefore, the naming of the truncated BSR in each communication system is not limited in the embodiment of the present application. In addition, when the truncated BSR follows the BSR format shown in FIG. 2 or FIG. 4 above, the truncated BSR can use a different subheader than the BSR shown in FIG. 2 or FIG. 4. Therefore, the network device can know whether the terminal device has other LCGs to send data through the sub-header of the truncated BSR.

The following describes and describes the LCG used by the truncated BSR to indicate which data to be transmitted.

For example, the truncated BSR is used to indicate a part of the LCG of the LCG on the terminal device that has data to be sent, and the amount of data to be sent of the part of the LCG. The number of the LCGs may be determined according to the system configuration, and may also be determined according to the system configuration. The length of the truncated BSR that the terminal device can transmit is determined, and the like. For example, assuming that the length of the truncated BSR is 3 bytes, since the first byte (Oct1) of the truncated BSR is used to indicate the LCG of the data to be transmitted, each byte in the subsequent byte can be used. Indicates the amount of data to be sent of the LCG of a data to be transmitted. Therefore, it can be determined that the above-described truncated BSR can indicate the amount of data to be transmitted of two LCGs in the LCG to which data is to be transmitted. It should be noted that the length of the truncated BSR may be determined by the base station by using the indication information to the terminal device, or may be determined by the terminal device according to the number of bits of the BSR for transmitting the truncated BSR on the MAC PDU. For example, when the terminal device sends the truncated BSR through the idle bit position of the MAC PDU, the terminal device may determine the size of the truncated BSR according to the number of idle bits of the MAC PDU.

As described in the foregoing description, the truncated BSR is used to indicate a part of the LCGs of the LCGs on the terminal device that have data to be sent, and the amount of data to be sent of the LCGs, where a part of the LCGs may be specifically based on the part of the LCGs. The number is determined from the LCG to be sent data, and can be divided into the following cases:

The first case: when each LCG on the terminal device corresponds to a priority, the priority of each LCG in a part of the LCGs here is higher than the LCG of the data to be transmitted except the part of the LCG. The priority of the LCG.

For a description of the implementation of the first case, refer to the description of the foregoing embodiment, and details are not described herein again.

In addition, in this embodiment, when the priority of the LCG may correspond to the priority of the LCH included in the LCG, the priority of the LCG may be determined according to the priority of the LCH on which the data to be transmitted exists on the LCG. For example, the priority of the LCH with the highest priority among the LCHs with the highest priority is included in the LCH with the higher priority, and is higher than the priority of the LCH with the highest priority among the LCHs with the data to be transmitted included in the LCG with the lower priority. . Or, the priority of the LCH having the lowest priority among the LCHs of the LCHs to be transmitted, and the priority of the LCHs having the lowest priority among the LCHs of the to-be-sent data included in the LCG having the lower priority . That is to say, the priority of the LCG is determined by the LCH in the LCG that has data to be transmitted and has the highest or lowest priority. The terminal device can learn the priority of each LCG according to the priority of the LCH with the highest priority among the LCGs or the priority of the LCH with the lowest priority. It can be understood that the manner of determining the priority of the foregoing LCG is only an example of the embodiment of the present application, and the manner for determining the priority of the LCG is not limited in the embodiment of the present application.

In the second case, each LCG on the terminal device corresponds to one priority, and at least one first LCG exists in the LCGs of all the above-mentioned data to be transmitted.

In this scenario, if the number of the at least one first LCG is less than the quantity of the part of the LCG, the part of the LCG includes at least one first LCG, and the priorities of the LCGs other than the at least one first LCG in the part of the LCG are high. The priority of other LCGs except a part of the LCG in all LCGs that have data to be transmitted. That is to say, in addition to the first LCG, some LCGs in some LCGs are LCGs with high priority among all LCGs that have data to be transmitted.

Optionally, the foregoing first LCG may be: an LCG in the same format as the air interface used in sending the truncated BSR in the LCG to be sent data. For a description of the implementation, refer to the description of the foregoing embodiment, and details are not described herein again.

Optionally, the first LCG may be: an LCG in which the amount of data to be sent is greater than or equal to a first preset threshold in all LCGs that have data to be sent. The first preset threshold may be specifically determined according to a system configuration.

In a specific implementation, the terminal device may compare the amount of data to be sent of each LCG of the LCG to be sent with the first preset threshold, and determine whether the amount of data to be sent in the LCG of all data to be sent is greater than or equal to The first LCG of the first predetermined threshold. If the first LCG in the LCG that has data to be transmitted is smaller than the number of LCGs that can be indicated by the truncated BSR, the terminal device may further follow the LCG according to the manner shown in the first case. Priority, and then select some LCGs from the remaining LCGs to be sent data, so that the first LCG and the total number of LCGs from all remaining LCGs to be sent data are the data to be sent that the truncated BSR can indicate. The number of LCGs. If the number of the first LCGs of the LCGs that have data to be transmitted is equal to the number of LCGs of the to-be-sent data amount that the truncated BSR can indicate, the terminal device can use the first LCGs as the BSRs that can use the truncation to indicate the data to be sent. The amount of LCG. If the number of the first LCGs of the LCGs that have data to be transmitted is greater than the number of LCGs that the truncated BSRs can indicate the amount of data to be sent, the terminal device may select the first LCGs according to the priorities of the first LCGs. The first LCG that can use the truncated BSR to indicate the amount of data to be transmitted is selected.

Optionally, the first LCG may be: an LCG in which the amount of data to be sent on the LCH is greater than or equal to a second preset threshold in all LCGs that have data to be sent. The second preset threshold may be specifically determined according to a system configuration.

In a specific implementation, the terminal device may compare the amount of the to-be-sent data of the LCH with the data to be sent on the LCG of the LCG to which the data to be transmitted is compared with the second preset threshold, and determine whether the LCG of all the data to be sent exists. Sending a first LCG whose data amount is greater than or equal to a first preset threshold. If the first LCG in the LCG that has data to be transmitted is smaller than the number of LCGs that can be indicated by the truncated BSR, the terminal device may further follow the LCG according to the manner shown in the first case. Priority, and then select some LCGs from the remaining LCGs to be sent data, so that the first LCG and the total number of LCGs from all remaining LCGs to be sent data are the data to be sent that the truncated BSR can indicate. The number of LCGs. If the number of the first LCGs of the LCGs that have data to be transmitted is equal to the number of LCGs of the to-be-sent data amount that the truncated BSR can indicate, the terminal device can use the first LCGs as the BSRs that can use the truncation to indicate the data to be sent. The amount of LCG. If the number of the first LCGs of the LCGs that have data to be transmitted is greater than the number of LCGs that the truncated BSRs can indicate the amount of data to be sent, the terminal device may select the first LCGs according to the priorities of the first LCGs. The first LCG that can use the truncated BSR to indicate the amount of data to be transmitted is selected.

Optionally, the first LCG may be: an LCG whose delay time of the data to be sent is less than or equal to a third preset threshold. The time delay remaining time mentioned herein may be the time delay remaining time of the service to which the data to be transmitted belongs. It should be noted that the foregoing third preset threshold may be specifically determined according to a system configuration.

In a specific implementation, the terminal device may set a discard timer for each data of each LCH of each LCG, where a maximum value of the discard timer is a delay corresponding to the LCH. When the LCH receives the data to be sent, the discard timer may be started for each data to determine whether to discard the to-be-sent data. Therefore, when the delay remaining time of the data to be transmitted of the LCG is the delay remaining time of the data with the least delay time remaining in the LCH of the LCG, the terminal device may be based on all the LCGs of the data to be transmitted. Timeout remaining time (delay remaining time) of the discard timer of each data in each LCH on each LCG, determining the remaining time of delay of the data to be transmitted of each LCG in the LCGs of all data to be transmitted .

Alternatively, the terminal device may set a discard timer for each LCH of each LCG, where the maximum value of the discard timer is the delay corresponding to the LCH. When the LCH receives the data to be sent, the drop timer may be started to determine whether to discard the to-be-sent data. Therefore, when the delay remaining time of the to-be-transmitted data of the LCG is the minimum value of the delay remaining time of all the LCHs of the LCG to be transmitted, the terminal device may be configured according to each of the LCGs of all the data to be transmitted. The timeout remaining time (delay remaining time) of the drop timer of each LCH on the upper one determines the delay remaining time of the data to be transmitted of each of the LCGs of the LCGs to be transmitted.

Or, when the remaining time of the delay of the data to be sent of the LCG is the minimum value of the remaining time of the delay of the LCH of the LCG, the terminal device may set a discard timer for each LCG, where The maximum value of the drop timer is the delay corresponding to the LCH with the highest latency requirement of the LCG. The drop timer can be started when any LCH in the LCG receives the data to be transmitted. Therefore, in this implementation manner, the foregoing terminal device may determine, according to the timeout remaining time (time delay remaining time) of the drop timer of each LCG in the LCG of all data to be transmitted, each of the LCGs to which data to be transmitted is determined. The remaining time of the delay of the data to be transmitted of the LCG.

After acquiring the remaining time delay of the data to be sent of each LCG, the terminal device may compare the remaining time of the delay of the data to be sent of each LCG with the third preset threshold to determine whether there is data to be sent. The first LCG whose delay remaining time is less than or equal to the third preset threshold. If the first LCG in the LCG that has data to be transmitted is smaller than the number of LCGs that can be indicated by the truncated BSR, the terminal device may further follow the LCG according to the manner shown in the first case. Priority, and then select some LCGs from the remaining LCGs to be sent data, so that the first LCG and the total number of LCGs from all remaining LCGs to be sent data are the data to be sent that the truncated BSR can indicate. The number of LCGs. If the number of the first LCGs of the LCGs that have data to be transmitted is equal to the number of LCGs of the to-be-sent data amount that the truncated BSR can indicate, the terminal device can use the first LCGs as the BSRs that can use the truncation to indicate the data to be sent. The amount of LCG. If the number of the first LCGs of the LCGs that have data to be transmitted is greater than the number of LCGs that the truncated BSRs can indicate the amount of data to be sent, the terminal device may select the first LCGs according to the priorities of the first LCGs. The first LCG that can use the truncated BSR to indicate the amount of data to be transmitted is selected.

Optionally, the foregoing first LCG may be: the LCG of all the data to be sent, including the new LCG of the data to be sent. The new data to be sent here is the last BSR sent by the terminal device. The BSR may be the BSR shown in FIG. 4, and may also be the above-mentioned truncated BSR, or may be any other BSR, for example, triggered by new data. After the BSR), the LCH on it is newly buffered for data to be sent.

In a specific implementation, the terminal device may determine, according to the to-be-sent data of the LCH that has data to be sent on each LCG of the LCG that is to be sent data, whether there is a new LCG of the new to-be-sent data in the LCG of the data to be sent. . If the first LCG in the LCG that has data to be transmitted is smaller than the number of LCGs that can be indicated by the truncated BSR, the terminal device may further follow the LCG according to the manner shown in the first case. Priority, and then select some LCGs from the remaining LCGs to be sent data, so that the first LCG and the total number of LCGs from all remaining LCGs to be sent data are the data to be sent that the truncated BSR can indicate. The number of LCGs. If the number of the first LCGs of the LCGs that have data to be transmitted is equal to the number of LCGs of the to-be-sent data amount that the truncated BSR can indicate, the terminal device can use the first LCGs as the BSRs that can use the truncation to indicate the data to be sent. The amount of LCG. If the number of the first LCGs of the LCGs that have data to be transmitted is greater than the number of LCGs that the truncated BSRs can indicate the amount of data to be sent, the terminal device may select the first LCGs according to the priorities of the first LCGs. The first LCG that can use the truncated BSR to indicate the amount of data to be transmitted is selected.

Optionally, the foregoing first LCG may be: an LCG that includes all data to be sent, and a new amount of data to be sent that is greater than or equal to a fourth preset threshold. Alternatively, the foregoing first LCG may be: an LCG in which all the data to be sent includes the new to-be-sent data, and the new to-be-sent data ratio is greater than or equal to a fifth preset threshold. The ratio of the new data to be sent is the ratio of the amount of data to be sent to the amount of data to be sent of the first LCG, or the amount of data to be sent and the amount of data to be sent of the first LCG. The ratio of the amount of data other than the amount of transmitted data, etc., the implementation principle and technical effect are similar to the above, and will not be described again. The fourth preset threshold and the fifth preset threshold may be specifically determined according to a system configuration.

In the third case, the remaining time of the delay of the data to be transmitted of each LCG in the foregoing part of the LCG is smaller than the remaining time of the delay of the data to be transmitted of the other LCGs except the part of the LCG. For the remaining time of the delay of the data to be sent, refer to the description of the foregoing embodiment, and details are not described herein again.

In a specific implementation, the terminal device may sort all the LCGs to be sent according to the timeout remaining time (time delay remaining time) of the drop timer of each LCG of the LCG to be sent data, in order from small to large. A part of the LCG is selected from all LCGs to which data is to be transmitted, and the amount of data to be transmitted of the part of the LCG is indicated by the truncated BSR.

The fourth case: the above part of the LCG may also be in the order of the LCG number from small to large, and the determined number of the part of the LCG is selected from all LCGs to be transmitted data. For a description of the implementation of the fourth case, refer to the description of the foregoing embodiment, and details are not described herein again.

As described in the foregoing embodiment, the truncated BSR is sent by the terminal device to the network device through the MAC PDU when the number of idle bits of the MAC PDU is insufficient to fill the BSR shown in FIG. 4 . Therefore, the above truncated BSR is usually located at the end of the MAC PDU. In this scenario, after receiving the MAC PDU, the network device can automatically determine the truncated according to the remaining number of bits in the MAC PDU after decoding the MAC CE or MAC SDU in the MAC PDU before the truncated BSR. The length of the BSR. In this way, the network device can complete decoding of the truncated BSR based on the length of the truncated BSR.

Optionally, in some embodiments, if the truncated BSR is not located at the end of the MAC PDU. That is, in the MAC PDU, there is also a MAC SDU or MAC CE after the bit position where the truncated BSR is located. In the scenario, the truncated BSR may also be used to indicate the length of the truncated BSR, so that the network device can complete the decoding of the truncated BSR based on the length of the truncated BSR, and ensure that the network device intercepts the BSR. Decoding efficiency.

It should be noted that, in the foregoing embodiment, the truncated BSR is described and described in the scenario that the number of idle bits of the MAC PDU is insufficient for the terminal device to fill the BSR shown in FIG. 4 . However, those skilled in the art can understand that the above-mentioned truncated BSR includes but is not limited to the above application scenarios. The data transmission method provided by the embodiment of the present application may be used in any scenario in which the terminal device needs to send the indication information indicating the amount of data to be sent on the LCG to the network device, and details are not described herein.

In the data transmission method provided by the embodiment of the present application, the terminal device may be configured to: when the number of idle bits of the MAC PDU is insufficient to fill the BSR capable of indicating all the data to be transmitted, and the BSR of the to-be-sent data amount of the LCG to be transmitted. A truncated BSR may be generated to indicate, by the truncated BSR, a portion of the LCGs on the terminal device that have data to be transmitted, and the amount of data to be transmitted of the LCGs. In this way, when the number of idle bits of the MAC PDU is insufficient, the terminal device can also indicate to the network device, by using the truncated BSR, a part of the LCG of the data to be sent on the terminal device, and the amount of data to be sent of the LCG. The network device can obtain the amount of data to be sent of the LCG of the part of the terminal device that needs to be sent in a timely and accurate manner, so that the network device allocates the uplink transmission resource to the terminal device more accurately and reasonably, and improves the allocation of the uplink transmission resource. effectiveness.

FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. As shown in FIG. 8, the foregoing terminal device may include: a processing module 11 and a sending module 12. among them,

The processing module 11 is configured to generate first indication information, where the first indication information is used to indicate a logical channel group of data to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent. ;

The sending module 12 is configured to send the first indication information.

Optionally, when each logical channel group in the logical channel group with the data to be sent corresponds to a priority, the priority of each logical channel group in the foregoing logical channel group may be higher than the to-be-sent The priority of other logical channel groups except the part of the logical channel group in the logical channel group of data.

Optionally, if at least one first logical channel group exists in each logical channel group of the logical channel group to which data is to be sent, and at least one first logical channel group exists in the logical channel group to which data is to be sent, at least one first logic The number of channel groups is smaller than the number of the logical channel groups, and the part of the logical channel group includes the at least one first logical channel group, and the at least one first logical channel group of the part of the logical channel group The priority of the other logical channel groups except the priority of the logical channel group other than the part of the logical channel group in the logical channel group to which data is to be transmitted is higher. If the number of the at least one first logical channel group is equal to the number of the partial logical channel groups, the at least one first logical channel group is used as the part of the logical channel group. If the number of the at least one first logical channel group is greater than the number of the logical channel groups, a part of the first logical channel group in the at least one first logical channel group is used as the part of the logical channel group. The priority of each of the first logical channel groups in the part of the logical channel group is higher than the first logic in the at least one first logical channel group except the part of the first logical channel group. The priority of the channel group. For example, the air interface format corresponding to the first logical channel group may be the same as the air interface format used when the first indication information is sent.

Optionally, the foregoing first indication information is further used to indicate a length of the first indication information.

With continued reference to FIG. 8, in some embodiments, the terminal device described above may further include a receiving module 13. The receiving module 13 is configured to receive the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.

The terminal device provided by the embodiment of the present invention can perform the action of the terminal device in the method embodiment shown in FIG. 5, and the implementation principle and the technical effect are similar, and details are not described herein again.

FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in FIG. 9, the foregoing network device may include: a receiving module 21 and a processing module 22. among them,

The receiving module 21 is configured to receive first indication information;

The processing module 22 is configured to determine, according to the first indication information, a logical channel group of data to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent.

With continued reference to FIG. 9, in some embodiments, the network device described above may further include a transmitting module 23. The sending module 23 is configured to send the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.

The network device provided by the embodiment of the present application may perform the operations of the network device in the foregoing method embodiment shown in FIG. 5, and the implementation principle and technical effects are similar, and details are not described herein again.

It should be noted that, the actual implementation of the above sending module may be a transmitter, and the receiving module may be a receiver when actually implemented, and the processing module may be implemented by software in the form of a processing component call; or may be implemented in the form of hardware. For example, the processing module may be a separately set processing element, or may be integrated in one of the above-mentioned devices, or may be stored in the memory of the above device in the form of program code, by a processing element of the above device. Call and execute the functions of the above processing module. In addition, all or part of these modules can be integrated or implemented independently. The processing elements described herein can be an integrated circuit that has signal processing capabilities. In the implementation process, each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital) Singnal processor (DSP), or one or more Field Programmable Gate Array (FPGA). For another example, when one of the above modules is implemented in the form of a processing component scheduler code, the processing component may be a general purpose processor, such as a central processing unit (CPU) or other processor that can call the program code. As another example, these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).

FIG. 10 is a schematic structural diagram of another terminal device according to an embodiment of the present application. As shown in FIG. 10, the terminal device includes at least a processor 504 and a transceiver 508. The terminal device may further include a memory 519 that stores computer execution instructions;

The processor 504 is configured to generate first indication information, where the first indication information is used to indicate a logical channel group of data to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent. The transceiver 508 is configured to send the first indication information generated by the processor 504.

Optionally, the transceiver 508 is further configured to receive the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.

The processor 504 can be used to perform the actions implemented by the terminal device described in the foregoing method embodiments, and the transceiver 508 can be used to perform the action that the terminal device described in the foregoing method embodiment receives or sends to the network device. For details, please refer to the description in the previous method embodiments, and details are not described herein again.

The processor 504 and the memory 519 described above may be integrated into one processing device, and the processor 504 is configured to execute program code stored in the memory 519 to implement the above functions. The memory 519 can also be integrated in the processor 504 when implemented.

The terminal device may further include a power source 512 for providing power to various devices or circuits in the terminal device. The terminal device may include an antenna 510 for transmitting uplink data or uplink control signaling output by the transceiver 508 through the wireless signal. Send it out.

In addition, in order to make the function of the terminal device more perfect, the terminal device may further include one or more of an input unit 514, a display unit 516, an audio circuit 518, a camera 520, a sensor 522, and the like, and the audio circuit further A speaker 5182, a microphone 5184, and the like can be included.

FIG. 11 is a schematic structural diagram of another network device according to an embodiment of the present disclosure. As shown in FIG. 11, the network device 600 includes at least a processor 604 and a transceiver 608.

The transceiver 608 of the network device is configured to receive the first indication information, and the processor 604 is configured to determine, according to the first indication information, a logical channel group to be sent data, and the logical channel to be sent data. The amount of data to be sent for a portion of the logical channel group of the group.

Optionally, the transceiver 608 of the network device is further configured to send the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.

The above-mentioned processor 604 can be used to perform the actions implemented by the network device described in the foregoing method embodiments, and the transceiver 608 can be used to perform the action that the network device described in the foregoing method embodiment receives or sends to the terminal device. For details, please refer to the description in the previous method embodiments, and details are not described herein again.

The processor 604 and the memory 603 may be combined to form a processing device, and the processor 604 is configured to execute the program code stored in the memory 603 to implement the above functions. The memory 603 can also be integrated in the processor 604 when implemented.

The network device may further include an antenna 610, configured to send downlink data or downlink control signaling output by the transceiver 608 by using a wireless signal.

It should be noted that the processor 504 of the terminal device and the processor 604 of the network device may be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and an NP. . The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination.

The memory 519 of the terminal device and the memory 603 of the network device may include a volatile memory, such as a random access memory (RAM); and may also include a non-volatile memory. For example, a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); the memory may also include a combination of the above types of memories.

In the embodiment of the present application, the terminal can perform wireless communication with the network device. The network device in the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the terminal device may correspond to the terminal device in the method embodiment of the present application. The foregoing and other operations and/or functions of the respective modules of the network device and the terminal device are respectively used to implement the corresponding processes of the foregoing method embodiments. For the sake of brevity, the description of the method embodiments of the present application may be applied to the device embodiment, where No longer.

FIG. 12 is a schematic structural diagram of a data communication system according to an embodiment of the present application. As shown in FIG. 12, the above data communication system may include: a terminal device 51 and a network device 52. The terminal device 51 may be any of the terminal devices in the foregoing embodiments. The network device 52 may be any network device in the foregoing embodiment, and the implementation principles and technical effects thereof are similar, and details are not described herein again.

The terminal device, the network device, and the data communication system provided by the embodiment of the present application, the terminal device may have insufficient number of idle bits in the MAC PDU to fill the LCG capable of indicating all data to be sent, and the to-be-sent data of all LCGs to be sent data. When the number of BSRs is generated, a first indication information whose length is shorter than the length of the BSR may be generated, by using the first indication information, indicating that the LCG of the data to be sent on the terminal device, and a part of the LCG of the LCG to be sent data are to be sent. The amount of data. In this way, when the number of idle bits of the MAC PDU is insufficient, the terminal device can also indicate to the network device, by using the first indication information, which LCGs of the data to be sent on the terminal device, so that the network device can be timely, And accurately knowing which LCGs on the terminal device are to be sent in addition to the LCG indicating the amount of data to be sent, so that the network device allocates uplink transmission resources to the terminal device more accurately and reasonably, and improves allocation of uplink transmission resources. effectiveness.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, computer instructions can be wired from a website site, computer, server or data center (eg Coax, fiber, digital subscriber line (DSL) or wireless (eg, infrared, wireless, microwave, etc.) is transmitted to another website, computer, server, or data center. The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. Useful media can be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)).

Claims

A data transmission method, comprising:

The terminal device generates first indication information, where the first indication information is used to indicate a logical channel group of data to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent;

The terminal device sends the first indication information.
The method according to claim 1, wherein each of the logical channel groups of the data to be transmitted corresponds to a priority.
The method according to claim 2, wherein each of the logical channel groups has a higher priority than the logical channel group of the data to be transmitted except the part of the logical channel group. The priority of other logical channel groups than others.
The method according to claim 2, wherein at least one first logical channel group exists in the logical channel group having data to be transmitted;

When the number of the at least one first logical channel group is smaller than the number of the partial logical channel groups, the part of the logical channel group includes the at least one first logical channel group, and the part of the logical channel group is divided The priority of the other logical channel groups except the at least one first logical channel group is higher than the priority of the logical channel group except the part of the logical channel group in the logical channel group to which data is to be sent;

When the number of the at least one first logical channel group is equal to the number of the partial logical channel groups, the at least one first logical channel group is used as the part of the logical channel group;

When a quantity of the at least one first logical channel group is greater than the number of the partial logical channel groups, a part of the first logical channel group in the at least one first logical channel group is used as the part of the logical channel group, The priority of each of the first logical channel groups in the partial logical channel group is higher than the first logical channel group in the at least one first logical channel group except the part of the first logical channel group priority.
The method according to claim 4, wherein the air interface format corresponding to the first logical channel group is the same as the air interface format used when the first indication information is sent.
The method according to any one of claims 1-5, wherein the first indication information is further used to indicate a length of the first indication information.
The method of claim 2, wherein the method further comprises:

The terminal device receives the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.
A data transmission method, comprising:

The network device receives the first indication information;

The network device determines, according to the first indication information, a logical channel group to which data is to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent.
The method according to claim 8, wherein each of the logical channel groups of the data channel to be transmitted corresponds to a priority.
The method according to claim 9, wherein each of the logical channel groups has a higher priority than the logical channel group of the data to be transmitted except the part of the logical channel group. The priority of other logical channel groups than others.
The method according to claim 9, wherein at least one first logical channel group exists in the logical channel group with data to be transmitted;

When the number of the at least one first logical channel group is smaller than the number of the partial logical channel groups, the part of the logical channel group includes the at least one first logical channel group, and the part of the logical channel group is divided The priority of the other logical channel groups except the at least one first logical channel group is higher than the priority of the logical channel group except the part of the logical channel group in the logical channel group to which data is to be sent;

When the number of the at least one first logical channel group is equal to the number of the partial logical channel groups, the at least one first logical channel group is used as the part of the logical channel group;

When a quantity of the at least one first logical channel group is greater than the number of the partial logical channel groups, a part of the first logical channel group in the at least one first logical channel group is used as the part of the logical channel group, The priority of each of the first logical channel groups in the partial logical channel group is higher than the first logical channel group in the at least one first logical channel group except the part of the first logical channel group priority.
The method according to claim 11, wherein the air interface format corresponding to the first logical channel group is the same as the air interface format used when the first indication information is sent.
The method according to any one of claims 8 to 12, wherein the first indication information is further used to indicate a length of the first indication information.
The method of claim 9 wherein the method further comprises:

The network device sends the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.
A terminal device, comprising:

a processor, configured to generate first indication information, where the first indication information is used to indicate a logical channel group of data to be sent, and a quantity of data to be sent of a part of the logical channel group of the logical channel group to which data is to be sent;

And a transceiver, configured to send the first indication information.
The terminal device according to claim 15, wherein each of the logical channel groups of the data to be transmitted corresponds to a priority.
The terminal device according to claim 16, wherein each of the logical channel groups has a higher priority than the logical channel group of the data to be transmitted except the part of the logical channel. The priority of other logical channel groups outside the group.
The terminal device according to claim 16, wherein at least one first logical channel group exists in the logical channel group having data to be transmitted;

When the number of the at least one first logical channel group is smaller than the number of the partial logical channel groups, the part of the logical channel group includes the at least one first logical channel group, and the part of the logical channel group is divided The priority of the other logical channel groups except the at least one first logical channel group is higher than the priority of the logical channel group except the part of the logical channel group in the logical channel group to which data is to be sent;

When the number of the at least one first logical channel group is equal to the number of the partial logical channel groups, the at least one first logical channel group is used as the part of the logical channel group;

When a quantity of the at least one first logical channel group is greater than the number of the partial logical channel groups, a part of the first logical channel group in the at least one first logical channel group is used as the part of the logical channel group, The priority of each of the first logical channel groups in the partial logical channel group is higher than the first logical channel group in the at least one first logical channel group except the part of the first logical channel group priority.
The terminal device according to claim 18, wherein the air interface format corresponding to the first logical channel group is the same as the air interface format used when the first indication information is sent.
The terminal device according to any one of claims 15 to 19, wherein the first indication information is further used to indicate a length of the first indication information.
The terminal device according to claim 16, wherein the terminal device further comprises:

The transceiver is configured to receive the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.
A network device, comprising:

a transceiver, configured to receive first indication information;

And a processor, configured to determine, according to the first indication information, a logical channel group of data to be sent, and a data volume to be sent of a part of the logical channel group of the logical channel group to which data is to be sent.
The network device according to claim 22, wherein each of the logical channel groups of the data to be transmitted corresponds to a priority.
The network device according to claim 23, wherein each of the logical channel groups has a higher priority than the logical channel group of the data to be transmitted except the part of the logical channel. The priority of other logical channel groups outside the group.
The network device according to claim 23, wherein at least one first logical channel group exists in the logical channel group with data to be transmitted;

When the number of the at least one first logical channel group is smaller than the number of the partial logical channel groups, the part of the logical channel group includes the at least one first logical channel group, and the part of the logical channel group is divided The priority of the other logical channel groups except the at least one first logical channel group is higher than the priority of the logical channel group except the part of the logical channel group in the logical channel group to which data is to be sent;

When the number of the at least one first logical channel group is equal to the number of the partial logical channel groups, the at least one first logical channel group is used as the part of the logical channel group;

When a quantity of the at least one first logical channel group is greater than the number of the partial logical channel groups, a part of the first logical channel group in the at least one first logical channel group is used as the part of the logical channel group, The priority of each of the first logical channel groups in the partial logical channel group is higher than the first logical channel group in the at least one first logical channel group except the part of the first logical channel group priority.
The network device according to claim 25, wherein the air interface format corresponding to the first logical channel group is the same as the air interface format used when the first indication information is sent.
The network device according to any one of claims 22 to 26, wherein the first indication information is further used to indicate a length of the first indication information.
The network device according to claim 23, wherein the network device further comprises:

The transceiver is configured to send the second indication information, where the second indication information is used to indicate a priority corresponding to the at least one logical channel group of the terminal device.
A terminal device, comprising: a memory and a processor, and a computer program stored on the memory for execution by the processor;

The processor executes the computer program to implement the steps of the data transmission method of any of claims 1-7.
A network device, comprising: a memory and a processor, and a computer program stored on the memory for execution by the processor;

The processor executes the computer program to implement the steps of the data transmission method of any of claims 8-14.
A data communication system, comprising: the terminal device according to any one of claims 15 to 21, and the network device according to any one of claims 22-28.
A terminal device for performing the method of any one of claims 1-7.
A computer readable storage medium, comprising instructions for causing a computer to perform the method of any of claims 1-7 when the storage medium is run on a computer.
A computer program product, comprising: computer program code, when said computer program code is run on a computer, causing said computer to perform the method of any of claims 1-7 .
A chip, comprising: a memory for storing a computer program, the processor for calling and running the computer program from the memory, such that the processor executes the claim The method of any of 1-7.
A terminal device for performing the method of any one of claims 8-14.
A computer readable storage medium, comprising instructions for causing a computer to perform the method of any one of claims 8-14 when the storage medium is run on a computer.
A computer program product, comprising: computer program code, when said computer program code is run on a computer, causing said computer to perform the method of any of claims 8-14 .
A chip, comprising: a memory for storing a computer program, the processor for calling and running the computer program from the memory, such that the processor executes the claim The method of any of 8-14.